A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6620-00-155-2608
NSN 5996-00-840-5246
NSN 6620-00-710-6847
NSN 6650-01-246-4262
NSN 6145-01-579-6590
NSN 5998-00-910-4649
NSN 5855-00-487-9691
NSN 5855-00-149-0766
NSN 6145-01-178-2153
NSN 5945-00-615-9218
NSN 6645-01-535-7136
NSN 6685-01-492-5831